જો $y = [(x+1)(2x+1)(3x+1) \ldots (nx+1)]^2$ હોય,તો $x=0$ આગળ $\frac{dy}{dx}$ ની કિંમત શોધો.

  • A
    $2n(n+1)$
  • B
    $n(n+1)$
  • C
    $\frac{n(n+1)}{2}$
  • D
    $\left(\frac{n(n+1)}{2}\right)^2$

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જો $y=(1+x)(1+x^2)(1+x^4) \dots (1+x^{2n})$ હોય,તો $x=0$ આગળ $\frac{dy}{dx}$ ની કિંમત શોધો.

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